Malicious PDF — malware analysis report

Static analysis result for SHA-256 36feedbeb6790717…

MALICIOUS

PDF

45.0 KB Created: 2020-08-21 11:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc2e8c24f0d0a6bfcb974bb0673bc4ee SHA-1: 6b290e2cd19ba2763efed6d079603db73931117a SHA-256: 36feedbeb6790717b2d2fb0af28c259ec19ca0bd7e43836515e29ff38b9bb620
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=pdf+pathophysiology+of+heart+disease'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, some of which lead to unknown or potentially malicious domains. The presence of a visual download button lure further supports the malicious intent. No scripts were extracted, but the document body and heuristics indicate a redirection-based attack.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=pdf+pathophysiology+of+heart+disease
    • http://xumuje.eyeslikemineinc.org/uploads/1/3/1/3/131383839/galoju.pdf
    • http://files.hongkong-entertainment-production.com/uploads/1/3/0/7/130738975/0c46992a8.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/sifam.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/adobe_acrobat_reader_download_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/applications_of_derivatives_maxima_and_minima_problems.pdf
    • https://cdn.shopify.com/s/files/1/0434/8274/2950/files/wejibotetopupuweduje.pdf
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/autocad_electrical_2020_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/pujomojotovod.pdf
    • https://cdn.shopify.com/s/files/1/0461/9835/8165/files/lubozuvuwudozaxevojov.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/koloferav.pdf
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/34017863234.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/71514750017.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7679/files/android_jetpack_compose.pdf
    • https://cdn.shopify.com/s/files/1/0430/7232/3737/files/lezevuguputolam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000659e.bin
c8a3bc02ddbd81cbd66d092ac9c8b3202d445349f46ac8c9ead1ec69b94fdcb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 5088 bytes
font_01_sfnt_off0000770a.bin
e67d0b364defe02bd4004c0018dbee4d7917bea167a00cc0981f50ebb79ea9ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x770A 9976 bytes
font_02_sfnt_off0000992d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x992D 4324 bytes